911 Turbo AWD F6-3600cc 3.6L SOHC Twin Turbo (1997)
Connecting Rod: Service and Repair
NOTE:
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During service procedures, refer to the illustration above and the information below.
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Engine is dismantled.
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The numbers in the above illustration refer to the steps below.
Determine Type Of Knurled Ring Bolt
To determine if a 3-ring knurled bolt (connecting rod bolt) or a 4-ring knurled bolt has been installed with the bolt installed, measure the groove
diameter.
1. Using suitable calipers, measure the diameter of groove one
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Former 3-ring knurled bolt diameter: 7.95 to 8.20 mm
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New 4-ring knurled bolt diameter: 7.75 to 7.85 mm
2. Difference between both types of knurled ring bolts
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The visable difference between the two types of bolt is only detectable with the bolts removed
